GOMOS Daily Reports

This report presents the daily analysis on parameters extracted from GOMOS level 1b data (GOM_TRA_1P).
It is intended to monitor some important parameters that will impact the quality of the level 2 products
as the Spectrometers and Photometers CCD Temperatures and Dark Charge, SATU noise equivalent angle...
A list of level 0 products (and content) that have arrived during the actual month to the PCF is also given.

Item	Value
Time of report generation	19MAR2007 05:35:23
Data source version	GOMOS/5.00
Start time of products	QDS_YESTERDAY(/START)-1D (17MAR2007 00:00:00)
Stop time of products	QDS_YESTERDAY(/STOP)-1D (18MAR2007 00:00:00)
Store outputs in DB	Yes
Nb of level 1b prods	50
Nb of prods with errors	0

2. Summary of products arrived in PCF (Product Control Facility)

2.1 Level 0 products arrived in PCF (see template here)

2.2 Plot of mission plan versus Level 0 production arrived in PCF during reporting period

Red segments are missing products.
Blue segments are available products.
Green segments are calibration measurements (not available products to users).

qds_image

2.3 Summary of missing occultations (red segments in previous plot)

UTC start time	Star name	Star ID	Orbit
17-MAR-2007 01:46:38	41PiSgr	155	26366
17-MAR-2007 03:29:17	34SigSgr	57	26367

2.4 Summary of processed GOM_TRA_1P products

Nr	Filename	UTC Start time	Limb	Duration	Star Id	Star Name	Star Mag	Star Temp	Nb Meas	Orbit	Prod. error
1	GOM_TRA_1PNPDE20070317_000605_000000452056_00259_26365_4819.N1	17-MAR-2007 00:06:05	Dark	44.500	155	41Pi Sgr	2.9000	6600.0	89	26365	No
2	GOM_TRA_1PNPDE20070317_000808_000000452056_00259_26365_4820.N1	17-MAR-2007 00:08:08	Dark	45.000	57	34Sig Sgr	2.0660	26000.	90	26365	No
3	GOM_TRA_1PNPDE20070317_000932_000000512056_00259_26365_4821.N1	17-MAR-2007 00:09:32	Dark	50.500	137	22Lam Sgr	2.8240	4400.0	101	26365	No
4	GOM_TRA_1PNPDE20070317_001136_000000462056_00259_26365_4822.N1	17-MAR-2007 00:11:36	Dark	46.000	38	20Eps Sgr	1.8360	11000.	92	26365	No
5	GOM_TRA_1PNPDE20070317_001735_000000422056_00260_26366_4823.N1	17-MAR-2007 00:17:35	Dark	42.000	141	Bet Ara	2.8400	4600.0	84	26366	No
6	GOM_TRA_1PNPDE20070317_002358_000000512056_00260_26366_4824.N1	17-MAR-2007 00:23:58	Dark	51.000	131	Gam Lup	2.8000	26000.	102	26366	No
7	GOM_TRA_1PNPDE20070317_002559_000000462056_00260_26366_4825.N1	17-MAR-2007 00:25:59	Dark	46.000	78	Alp Lup	2.3040	28000.	92	26366	No
8	GOM_TRA_1PNPDE20070317_002726_000000532056_00260_26366_4826.N1	17-MAR-2007 00:27:26	Dark	53.000	81	Eta Cen	2.3560	28000.	106	26366	No
9	GOM_TRA_1PNPDE20070317_003033_000000482056_00260_26366_4827.N1	17-MAR-2007 00:30:33	Straylight	48.000	54	5The Cen	2.0550	4500.0	96	26366	No
10	GOM_TRA_1PNPDE20070317_003222_000000502056_00260_26366_4828.N1	17-MAR-2007 00:32:22	Straylight	49.500	123	Iot Cen	2.7500	10200.	99	26366	No
11	GOM_TRA_1PNPDE20070317_003808_000000542056_00260_26366_4829.N1	17-MAR-2007 00:38:08	Straylight	53.500	106	9Bet Crv	2.6480	5600.0	107	26366	No
12	GOM_TRA_1PNPDE20070317_004027_000000522056_00260_26366_4830.N1	17-MAR-2007 00:40:27	Twi_and_stray	51.500	100	4Gam Crv	2.5800	13100.	103	26366	No
13	GOM_TRA_1PNPDE20070317_005134_000000452056_00260_26366_4831.N1	17-MAR-2007 00:51:34	Bright	45.000	62	94Bet Leo	2.1360	9700.0	90	26366	No
14	GOM_TRA_1PNPDE20070317_005947_000000392056_00260_26366_4832.N1	17-MAR-2007 00:59:47	Bright	38.500	174	52Psi UMa	3.0040	4400.0	77	26366	No
15	GOM_TRA_1PNPDE20070317_010259_000000372056_00260_26366_4833.N1	17-MAR-2007 01:02:59	Bright	36.500	82	48Bet UMa	2.3650	10600.	73	26366	No
16	GOM_TRA_1PNPDE20070317_010429_000000552056_00260_26366_4834.N1	17-MAR-2007 01:04:29	Bright	55.000	36	50Alp UMa	1.8000	6300.0	110	26366	No
17	GOM_TRA_1PNPDE20070317_010601_000000442056_00260_26366_4835.N1	17-MAR-2007 01:06:01	Bright	44.000	32	77Eps UMa	1.7630	11000.	88	26366	No
18	GOM_TRA_1PNPDE20070317_011132_000000392056_00260_26366_4836.N1	17-MAR-2007 01:11:32	Bright	39.000	60	7Bet UMi	2.0810	3950.0	78	26366	No
19	GOM_TRA_1PNPDE20070317_011535_000000432056_00260_26366_4837.N1	17-MAR-2007 01:15:35	Bright	43.000	119	14Eta Dra	2.7270	4700.0	86	26366	No
20	GOM_TRA_1PNPDE20070317_012456_000000382056_00260_26366_4838.N1	17-MAR-2007 01:24:56	Bright	38.000	144	18Del Cyg	2.8600	11000.	76	26366	No
21	GOM_TRA_1PNPDE20070317_012623_000000382056_00260_26366_4839.N1	17-MAR-2007 01:26:23	Bright	37.500	66	37Gam Cyg	2.2080	5900.0	75	26366	No
22	GOM_TRA_1PNPDE20070317_013629_000000522056_00260_26366_4840.N1	17-MAR-2007 01:36:29	Twi_and_stray	52.000	11	53Alp Aql	0.76500	8000.0	104	26366	No
23	GOM_TRA_1PNPDE20070317_014845_000000462056_00260_26366_4952.N1	17-MAR-2007 01:48:45	Dark	45.500	57	34Sig Sgr	2.0660	26000.	91	26366	No
24	GOM_TRA_1PNPDE20070317_015009_000000512056_00260_26366_4953.N1	17-MAR-2007 01:50:09	Dark	51.000	137	22Lam Sgr	2.8240	4400.0	102	26366	No
25	GOM_TRA_1PNPDE20070317_015213_000000472056_00260_26366_4954.N1	17-MAR-2007 01:52:13	Dark	47.000	38	20Eps Sgr	1.8360	11000.	94	26366	No
26	GOM_TRA_1PNPDE20070317_015812_000000412056_00261_26367_4955.N1	17-MAR-2007 01:58:12	Dark	41.000	141	Bet Ara	2.8400	4600.0	82	26367	No
27	GOM_TRA_1PNPDE20070317_020435_000000542056_00261_26367_4956.N1	17-MAR-2007 02:04:35	Dark	53.500	131	Gam Lup	2.8000	26000.	107	26367	No
28	GOM_TRA_1PNPDE20070317_020635_000000472056_00261_26367_4957.N1	17-MAR-2007 02:06:35	Dark	47.000	78	Alp Lup	2.3040	28000.	94	26367	No
29	GOM_TRA_1PNPDE20070317_020803_000000542056_00261_26367_4958.N1	17-MAR-2007 02:08:03	Dark	53.500	81	Eta Cen	2.3560	28000.	107	26367	No
30	GOM_TRA_1PNPDE20070317_021110_000000482056_00261_26367_4959.N1	17-MAR-2007 02:11:10	Straylight	48.000	54	5The Cen	2.0550	4500.0	96	26367	No
31	GOM_TRA_1PNPDE20070317_021258_000000492056_00261_26367_4960.N1	17-MAR-2007 02:12:58	Straylight	49.000	123	Iot Cen	2.7500	10200.	98	26367	No
32	GOM_TRA_1PNPDE20070317_021844_000000562056_00261_26367_4961.N1	17-MAR-2007 02:18:44	Straylight	55.500	106	9Bet Crv	2.6480	5600.0	111	26367	No
33	GOM_TRA_1PNPDE20070317_022103_000000502056_00261_26367_4962.N1	17-MAR-2007 02:21:03	Twi_and_stray	50.000	100	4Gam Crv	2.5800	13100.	100	26367	No
34	GOM_TRA_1PNPDE20070317_023210_000000462056_00261_26367_4963.N1	17-MAR-2007 02:32:10	Bright	45.500	62	94Bet Leo	2.1360	9700.0	91	26367	No
35	GOM_TRA_1PNPDE20070317_024023_000000402056_00261_26367_4964.N1	17-MAR-2007 02:40:23	Bright	40.000	174	52Psi UMa	3.0040	4400.0	80	26367	No
36	GOM_TRA_1PNPDE20070317_024335_000000372056_00261_26367_4965.N1	17-MAR-2007 02:43:35	Bright	37.000	82	48Bet UMa	2.3650	10600.	74	26367	No
37	GOM_TRA_1PNPDE20070317_024504_000000402056_00261_26367_4966.N1	17-MAR-2007 02:45:04	Bright	39.500	36	50Alp UMa	1.8000	6300.0	79	26367	No
38	GOM_TRA_1PNPDE20070317_024636_000000462056_00261_26367_4967.N1	17-MAR-2007 02:46:36	Bright	46.000	32	77Eps UMa	1.7630	11000.	92	26367	No
39	GOM_TRA_1PNPDE20070317_025208_000000362056_00261_26367_4968.N1	17-MAR-2007 02:52:08	Bright	36.000	60	7Bet UMi	2.0810	3950.0	72	26367	No
40	GOM_TRA_1PNPDE20070317_025610_000000432056_00261_26367_5110.N1	17-MAR-2007 02:56:10	Bright	43.000	119	14Eta Dra	2.7270	4700.0	86	26367	No
41	GOM_TRA_1PNPDE20070317_030531_000000382056_00261_26367_5111.N1	17-MAR-2007 03:05:31	Bright	38.000	144	18Del Cyg	2.8600	11000.	76	26367	No
42	GOM_TRA_1PNPDE20070317_030659_000000362056_00261_26367_5112.N1	17-MAR-2007 03:06:59	Bright	36.000	66	37Gam Cyg	2.2080	5900.0	72	26367	No
43	GOM_TRA_1PNPDE20070317_031705_000000482056_00261_26367_5113.N1	17-MAR-2007 03:17:05	Twi_and_stray	48.000	11	53Alp Aql	0.76500	8000.0	96	26367	No
44	GOM_TRA_1PNPDE20070317_032719_000000472056_00261_26367_5114.N1	17-MAR-2007 03:27:19	Dark	47.000	155	41Pi Sgr	2.9000	6600.0	94	26367	No
45	GOM_TRA_1PNPDE20070317_033046_000000522056_00261_26367_5115.N1	17-MAR-2007 03:30:46	Dark	52.000	137	22Lam Sgr	2.8240	4400.0	104	26367	No
46	GOM_TRA_1PNPDE20070317_033250_000000482056_00261_26367_5116.N1	17-MAR-2007 03:32:50	Dark	47.500	38	20Eps Sgr	1.8360	11000.	95	26367	No
47	GOM_TRA_1PNPDE20070317_033848_000000412056_00262_26368_5117.N1	17-MAR-2007 03:38:48	Dark	41.000	141	Bet Ara	2.8400	4600.0	82	26368	No
48	GOM_TRA_1PNPDE20070317_034512_000000522056_00262_26368_5118.N1	17-MAR-2007 03:45:12	Dark	51.500	131	Gam Lup	2.8000	26000.	103	26368	No
49	GOM_TRA_1PNPDE20070317_034712_000000482056_00262_26368_5119.N1	17-MAR-2007 03:47:12	Dark	48.000	78	Alp Lup	2.3040	28000.	96	26368	No
50	GOM_TRA_1PNPDE20070317_034840_000000512056_00262_26368_5120.N1	17-MAR-2007 03:48:40	Dark	51.000	81	Eta Cen	2.3560	28000.	102	26368	No

3. Plot of GOMOS spectrometers and photometers temperatures from level 1b data

qds_image

4. Overview of dark signal processing per product

The Dark Charge (DC) is a temperature-dependant signal added to the useful measurements and it is therefore substracted
from them during the processing. There are two phenomena that produce a continuous increase of the DC: the "hot pixels"
(a pixel is "hot" when its DC exceeds by a significant amount its value measured on ground at the same temperature) and
the "Random Telegraphic Signal" (abrupt change positive or negative of the CCD pixel signal, random in time, affecting
only the DC part of the signal and not the photon generated signal).
In this section a list of products that did not use the Dark Sky Area (DSA) observation for the DC computation is given.
It is also provided the mean DC plot per product for dark limb products with no error flag set.

4.1 All products used the DSA observation for the DC computation

4.2 Plot of mean dark charges per product: only products in DARK limb conditions without errors are used

5. Demodulation flag and quality information monitoring

In this section it is presented the modulation information extracted from the pcd (product confidence data)
at measurement level and information extracted from the Quality Summary dataset. Only products without errors
(error flag in the MPH set to "0") are used.

5.1 Percentage of products during reporting period with:


At least one measurement with demodulation flag set:	22.0000 %
Reference spectrum computed from DB:	0.00000 %
Reference spectrum with small number of measurements:	0.00000 %
SATU data not used:	0.00000 %

5.2 Plot quality information per product (time dependant)

5.3 Plot quality information per product (world map)

6. Statistics and plot of tangent altitude of the last measurement (DARK & BRIGHT products without errors)

6.1 Statistics on tangent altitude lost:

Statistics	DARK	BRIGHT	TWILIGHT
Mean:	18.709	22.272	NaN
St. deviation:	1.7554	5.6528	NaN
Maximum:	22.931	29.976	NaN
Minimum:	15.854	3.6143	NaN
Number of data:	22.000	18.000	NaN

6.2 Plot for DARK limb products

6.3 Plot for BRIGHT limb products

7. Star Acquisition and Tracking Unit (SATU)

The Star Acquisition and Tracking Unit (SATU) analyses the position of the tracked star beam collected by
the GOMOS telescope and deflected by the optical beam dispatcher. The main functin of the SATU is to detect
a star, provide its image position to the science data electronics and to help the pointing function to keep
the star image at a fixed position. In tracking mode the SATU data is recorded with a frecuency of 100 Hz.

7.1 SATU 'X' and 'Y' axis plots (dark limb)

SATU CCD 'X' and 'Y' axis plots are provided in order to detect any abnormal behaviour of the tracking system.
For every occultation (color) the plot should remain stable (with some noise) until we are deep in the atmosphere
where big fluctuations are registered due to the refractive effects.

qds_image

7.2 Statistics on SATU Noise Equivalent Angle (NEA) for DARK (D) and BRIGHT (B) products above 105 kms

The Star Acquisition and Tracking Unit (it is the CCD that tracks the star while it is occulted) Noise Equivalent
Angle consists of the statistical angular variation of the SATU data above the atmosphere.
Statistics (in microradians) above 105 km are computed for every occultation, giving four values per occultation: one in the 'X'
direction and one in the 'Y' direction for dark and bright limbs. A mean value per day in every direction and limb
is calculated and monitored in order to assess instrument performance in terms of star pointing.

7.2.1 SATU NEA Statistics (table)

Statistics	SATU X (D)	SATU Y (D)	SATU X (B)	SATU Y (B)
Mean:	0.28899	-0.64503	0.22190	-0.75789
St. deviation:	0.72201	1.7119	0.72145	1.6762
Maximum:	15.100	34.200	5.3000	6.3000
Minimum:	-5.2000	-18.800	-4.8000	-6.9000
Number of data:	25500.	25500.	17350.	17350.

7.2.2 Trend of daily SATU NEA St. deviation since 1st April 2006 (dark limb)

The long term trend of the SATU 'X' and 'Y' standard deviations should be constant during the whole mission.

The colorbar represents the start tangent altitude (km) of the occultations.

Upper curve: STD of SATU Y axis
Lower curve: STD of SATU X axis

qds_image

8. Auxiliary Data Files used for the production reported in section 2.4

The number reported in the third column indicates since which file (see list in section 2.4) the corresponding
auxiliary file has been used. The fourth column is the date of those product files.

Type	Auxiliary Filename	Used since product	Used since product date
INST_PHYS_CHARACTERISTICS	GOM_INS_AXNIEC20050627_150713_20030716_120000_20100101_000000	1	17-MAR-2007 00:06:05
CALIBRATION_DATABASE	GOM_CAL_AXVIEC20070307_090230_20070305_000000_20100101_000000	1	17-MAR-2007 00:06:05
LEVEL-1B_PROC_CONFIG	GOM_PR1_AXNIEC20050627_151042_20020301_000000_20100101_000000	1	17-MAR-2007 00:06:05
STAR_CATALOGUE	GOM_CAT_AXVIEC20020121_161009_20020101_000000_20200101_000000	1	17-MAR-2007 00:06:05
STELLAR_SPECTRA_DATABANK	GOM_STS_AXNIEC20040308_103538_20020101_160000_20100101_000000	1	17-MAR-2007 00:06:05
ECMWF_FILE	AUX_ECF_AXNECM20070316_061111_20070316_210000_20070317_090000	1	17-MAR-2007 00:06:05
OPTIONAL_ECMWF_FILE	MISSING	1	17-MAR-2007 00:06:05
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070316_221942_000057382056_00258_26364_2986.N1	1	17-MAR-2007 00:06:05
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070317_000039_000054192056_00259_26365_2987.N1	23	17-MAR-2007 01:48:45
ORBIT_DATA_FILE	DOR_NAV_0PNPDE20070317_013617_000041442056_00260_26366_2988.N1	40	17-MAR-2007 02:56:10

Reports

Daily Report Level 2 Dataset IPF v6.01

Daily Reports of NRT data

Data Anomaly Reports

Instrument Anomaly Reports

Monthly Reports

e-mail webmaster

Last modified:
24-Apr-2008